### build-kernel
This playbook is used to automatically build a kernel with an ACS overrides patch applied as well as Valve's fsync patches.  

The ACS patch is useful to isolate PCI-e devices to their own IOMMU group for VFIO passthrough.

The fsync patches improve Proton performance.

See this page for ACS kernel configuration details: https://copr.fedorainfracloud.org/coprs/jlay/kernel-acspatch/

### Requirements
 - Inventory with one host 
   - `hosts-local` provided as a sample inventory for localhost
 - This host must be running Fedora (builds use mock)

### Usage

#### Notes
Target Fedora version is controlled by the variable `fedora_version` in [./playbook.yml](./playbook.yml)  

Patch to apply is determined by the `patch_file` variable, stored in [./payload/](./payload)

Patches for many different kernel versions provided, the highest version available should be current/working.  Patch versions only change when `diffs` change.

#### Output:
```
$ ansible-playbook -i buildserver playbook.yml -b --ask-become-pass
BECOME password: 

PLAY [buildservers] *******************************************************************************************************************************************

TASK [Gathering Facts] ****************************************************************************************************************************************
ok: [buildserver]

TASK [Ensure fedpkg is installed] *****************************************************************************************************************************
changed: [buildserver]

TASK [Find old mock chroots] **********************************************************************************************************************************
ok: [buildserver]

TASK [Clean old mock chroots] *********************************************************************************************************************************

TASK [Clean old build dir] ************************************************************************************************************************************
ok: [buildserver]

TASK [Clone f32 kernel to /tmp/f32_kernel] ********************************************************************************************************************
changed: [buildserver]

TASK [Copy patch to build dir] ********************************************************************************************************************************
changed: [buildserver]

TASK [Copy newpatch.sh on master branch, for 5.6 on f31] ******************************************************************************************************
changed: [buildserver]

TASK [Apply patch and build kernel (logs in /tmp/f32_kernel/results_kernel/*)] ********************************************************************************
changed: [buildserver] => (item=./scripts/newpatch.sh acso-5.4.6.patch)
changed: [buildserver] => (item=/usr/bin/sed -i -e 's/%define buildid .*$/%define buildid .acspatch/' kernel.spec)
changed: [buildserver] => (item=/usr/bin/make release)
changed: [buildserver] => (item=fedpkg mockbuild)

TASK [Find RPMs in /tmp/f32_kernel/results_kernel/*/*/*.rpm] **************************************************************************************************
ok: [buildserver]

TASK [Copy RPMs to /tmp/ (local)] *****************************************************************************************************************************
[...]

PLAY RECAP ****************************************************************************************************************************************************
buildserver                      : ok=10   changed=6    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0
```